×
carat vs. color  length*  width*
  ×

(or examine a )
* size in mm (optional)

40ct Fluorite (Pear, 31.39×18.91mm, Bluish Green) vs 40ct Topaz (Pear, 30.33×18.27mm, Blue)


Quick summary: When looked from above (face-up position), 40ct Fluorite (31.39×18.91mm, pear cut) appears 7% larger than 40ct Topaz (30.33×18.27mm, pear cut). See below how they compare side-by-side on a ring and finger.

40ct Fluorite (pear cut)
vs
 40ct Topaz (pear cut)
bluish green
 
blue
31.39×18.91 mm 30.33×18.27 mm
actual size
Actual size of 40ct Fluorite (pear cut, 31.39×18.91mm, Bluish Green color)   Actual size of 40ct Topaz (pear cut, 30.33×18.27mm, Blue color)
 
Actual size is set for screen
Ring: Skin tone:
Ring width: 3.0 mm
Left finger image
Ring on left finger
Bluish Green 40ct Fluorite (pear cut, 31.39×18.91mm) on a left ring and finger
64 mm
Right finger image
Ring on a right finger
Blue 40ct Topaz (pear cut, 30.33×18.27mm) on a right ring and finger
Your settings
Ring
 Gold
Skin tone
 Light
Ring diameter
 16.9 mm
Ring width
 3.0 mm
Finger length
 64 mm
Finger coverage
 112% vs 109%
Saved...
Ring diameter: 16.9 mm
USA UK Asia EU1 EU2
Actual sizes of 40ct Fluorite Pear (31.39×18.91mm, Bluish Green) and 40ct Topaz Pear (30.33×18.27mm, Blue) as they would appear on a ring and finger. Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.

Where to buy?

For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile

Face-up Size

All things being equal, Topaz will face-up smaller than Fluorite for a given carat weight, because it has higher specific gravity (3.53 vs. 3.18 - this means it's "heavier" compared to Fluorite of the same size). Face-up size also depends heavily on the proportions of the cut.

Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.


40 Ct Fluorite (Pear) 40 Ct Topaz (Pear)
31.39×18.91 mm vs 30.33×18.27 mm
433.32 mm²   404.51 mm²
Face-up size outline for 40ct Fluorite (31.39×18.91mm, pear cut)
Face-up size outline for 40ct Topaz (30.33×18.27mm, pear cut)
40ct Fluorite Pear (31.39×18.91mm)
40ct Topaz Pear (30.33×18.27mm)
Difference: 7% (28.81 mm²)
40ct Fluorite (Pear, 31.39×18.91mm) has approx. 7% more face-up area than 40ct Topaz (Pear, 30.33×18.27mm).


Popular comparisons: